Fluence

Fluence Energy, founded in 2018 as a Siemens and AES joint venture, is a global leader in energy storage and digital solutions for renewables. Offering products like Gridstack and software such as Mosaic, they operate in over 40 markets, specializing in advanced lithium-ion technology to enhance grid stability and integrate renewable energy effectively.

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Fluence Energy stands as a global leader in energy storage solutions and digital applications for renewable energy. Established in 2018 as a joint venture between Siemens and AES, the company develops and implements advanced storage systems that strengthen electrical grids worldwide. Their product portfolio includes energy storage platforms such as Gridstack, Ultrastack, and Sunstack, complemented by intelligent software solutions like Mosaic and Nispera for optimized energy asset management.

Operating in more than 40 markets globally, Fluence Energy combines manufacturing excellence with digital innovation to address the increasing demand for reliable energy storage. The company’s solutions enable utilities, independent power producers, and commercial customers to integrate renewable energy sources effectively while maintaining grid stability.

Battery Technology

Fluence Energy specializes in lithium-ion battery systems, with particular emphasis on lithium iron phosphate (LFP) technology. Their flagship product, the Gridstack Pro series, incorporates advanced safety features and delivers 5-6 MWh capacity per enclosure, setting new standards for energy density in utility-scale applications.

The company’s technical expertise extends to battery pack and module manufacturing, conducted in U.S. facilities to ensure supply chain reliability and qualify for domestic content incentives. Their engineering teams continuously work on improving energy density, thermal management, and system integration capabilities.

Fluence Energy also maintains active research into emerging technologies, including sodium-ion and solid-state batteries. Through a strategic partnership with Northvolt, they’re developing sustainable battery systems aimed at reducing total ownership costs while enhancing functionality for grid-scale applications. Their battery management systems incorporate predictive maintenance capabilities and advanced monitoring tools to optimize performance and extend battery life.

Recent Projects

In January 2025, Fluence Energy announced a significant partnership with DTEK to deliver 200 MW of energy storage systems across six sites in Ukraine. This project, scheduled for completion by October 2025, will enhance Ukraine’s power grid stability and support energy independence.

The company reported exceptional financial performance in fiscal year 2024, achieving approximately $2.7 billion in revenue. In December 2024, they announced a convertible notes offering and established capped call transactions to strengthen their financial position.

Investors

Fluence Energy operates as a joint venture between two industry giants: Siemens and AES Corporation. Following their initial collaboration, the company went public and now trades on NASDAQ under the ticker symbol FLNC. While Siemens and AES remain the primary stakeholders, the public listing has opened opportunities for additional investor participation through stock market investments.